Mechanism for actuating valves for steam-pumps



(No Model.) 2 Sheets-smet.1.l

J. MAYHER.

MECHANISM EUR AGTUA'TING VALVES FOR STEAM PUMPS.

No. 358,286. Patented Feb. 22, 188.7.

AIIHINHHI (No Model.) 2 sheets-sheet 2,

J. MAYHBR. MEGHANISM POR AGTUATING VALVES POR STEAM PUMPS.. N0. 358,286. Patented Feb. 2,2, 1887.

@Q en@ UNITED STATES PATENT OFFICE.

JOHN MAYHER, OF EAST HAMPTON, MASSACHUSETTS.

MECHANISM FOR ACTUATING VALVES FOR STEAM-PUMPS.

SPECIFICATION forming part of Letters Patent No. 358,286, dated February 22, 1887.

' Application tiled November 5,1886. Serial No. 218,070. (No model.)

. To LZZ whom, it may concern:

Be it known that I, JOHN MAYHEE, of East Hampton, county of Hampshire, and State of Massachusetts, have invented new and useful Improvements in Mechanisms for Actuatingv Valves for Steam-Pumps; and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

This invention has for its obj ect the simplifying of the construction of certain actuating mechanisms employed in moving the valves of duplex pumps; andit consists in certain specific features of construction, hereinafter fully described, byA means of which the desired result is obtained.

In the drawings, Figure 1 represents afront View of the improved mechanism; Fig. 2, an end view of the same; Fig. 3, a central longitudinal sectional View, and Fig. 4 an end view of the central shaft and the surrounding parts.

To enable others skilled in the art to make my invention, I will proceed to describe fully the construction of the same.

1 represents a vertical standard supporting a xed cylinder, 2, as shown.

3, Fig. 3, represents a sleeve within the cylinder, which sleeve is attached at one end to the long. arm 4, having a fork, 5, adapted to take the tappet-pin 6, Fig. 1, on the pistonrod 7 of one of the cylinders, and at the other end to the short arm 8, Fig. 3, having a pin properly secured to the valve-rod 9, Fig. 1, as shown.

10 represents a shaft of any proper' construction extending through the sleeve, which shaft is attached at one end to the long arm l 11, having a fork, 12, adapted to take the tappet-pin 13, Fig. 1, on the piston-rod 14 of the other cylinder, and at the other end to the short arm 15, having a pin properly secured to the valve-rod 16, as shown. t

From this construction it follows that when the long arm on either end is actuated by the piston-rod the valve-rod on the opposite side has a corresponding movement.

By means of this invention the construction is simplified, and actuating arms of equal length may be employed.

I am aware of the existence of United States Patents numbered 16,515 and 200,890 and the German Patent. No. 31,615; but material differences existlbetweenthe constructions therein shown and the one employed by me.

Having thus fully described my invention, what I claim as'new, and desire to secure -by Letters Patent, is-

The combination of the following elements: the central supporting-cylinder, 2, the sleeve 3, having at one end the long arm 4, adapted for actuation by the tappet-pin 6 on the pistonrod 7, and at the other end the short arm 8, connected with the valve-rod 9, and a shaft, 10, having at one end along arm, 11, adapted for actuation by the tappet-pin 13 on the pistonrod 14:, and at the other. end a short arm, 15, connected with the valve-rod 16, as and for the purpose described.

This specication signed and witnessed this 3d day of November, 1886.

` J N O. MAYHER.

Witnesses:

M. B. SLATTEEY, W. H. KIMBALL. 

